Bowed Heads U.S. Air Force personnel bow their heads during the invocation at the beginning of a 9/11 remembrance ceremony on Royal Air Force Lakenheath, England, Sept. 11, 2015. U.S. Deputy Defense Secretary Work delivered remarks at the ceremony during a visit to the base. DoD photo by Glenn Fawcett SHARE: Download: Full Size (1.59 MB) Tags: 9/11, work travels, useucom, deputy secretary of defense, leaders, leaders, air force, all images, airmen Credit: Glenn Fawcett VIRIN: 150911-D-NI589-767.JPG Photo Gallery